JPS6347669B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a ventilation cooling system for a diesel electric locomotive, and in particular, a dynamic brake resistor is disposed inside a radiator of a diesel engine, and both are connected to a common fan. Regarding things that are ventilated and cooled.

[Prior art]

In a diesel electric locomotive, ventilation cooling is performed using a fan to cool the radiator of the diesel engine and the resistor for the dynamic brake of the electric locomotive.

This type of ventilation cooling device that has been commonly used in the past is shown in FIGS. 1 and 2.
In the figure, 1 is the vehicle body, 2 is the diesel engine,
3 is a generator, and 4 is a radiator for cooling cooling water heated by the diesel engine 2, which are attached to the side of the vehicle body 1. 5 is a fan for ventilation cooling the radiator 4, 6 is a drive mechanism for rotating the fan 5, 7 is a resistor for dynamic brakes, 8 is a fan for ventilation cooling the resistor 7, 9 is a fan 8 is a drive motor, 10 is a cooling air intake port, and 11 is a cooling air outlet. In this way, in the conventional device, the radiator 4 and the dynamic brake resistor 7 were placed in different locations, and each was cooled using a dedicated fan.
The drawbacks were that it took up more space, the length of the locomotive became longer, and it was heavier.

To solve this drawback, as shown in FIG. 3, the radiator 4 is placed on the top surface of the vehicle body 1,
It has been proposed that a dynamic brake resistor 7 is placed on the side of the vehicle body 1 and both are cooled by a common fan 12. However, in such a device, since the radiator 4 is placed horizontally, there is a risk of damage to the radiator 4 due to vertical vibrations during driving.Also, since the surface on which the radiator 4 is installed is the entire top surface, there is a risk that the radiator 4 is installed on both sides. Compared to installing it, the length of the radiator will be longer,
This is a minus from the point of view of shortening the vehicle body length.

Further, as shown in FIGS. 4 and 5, the radiator 4 is arranged on both sides of the vehicle body 1, and the dynamic brake resistor 7 is arranged on the upper surface of the vehicle body 1.
It has also been proposed that both be ventilated and cooled by a common fan 12. However, in such a device, the dynamic brake resistor 7 becomes hot.
Not only will the life of the element be shortened, but also the connection part 1 between the resistor 7 and the electric wire will be exposed to rainwater.
3 must be covered with a waterproof cover 14 or the like to achieve a waterproof structure, which has the disadvantage of complicating the structure.

Furthermore, although not shown, there is also a system in which a radiator is placed on the side of the vehicle body, a dynamic brake resistor is placed inside the radiator at an appropriate interval, and both are ventilated and cooled by a common fan. Proposed. Although such a device does not have the above-mentioned drawbacks, it does have the following problems. In other words, since the radiator and the dynamic brake resistor are cooled together by ventilation, a larger air volume is naturally required than when cooling only the radiator or only the resistor. Because the wind speed of the radiator increases, and the ventilation area of the resistor is smaller than that of the radiator, the presence of the resistor makes the wind speed distribution within the ventilation surface of the radiator uneven. Particularly in areas where the wind speed is high, the radiator cuffin vibrates, causing the problem of vibrating noise from the fins. Furthermore, since the resistor is installed in a limited space inside the radiator, there is a drawback that it is extremely difficult to remove and install the resistor during maintenance and inspection.

[Purpose of the invention]

It is an object of the present invention to eliminate the above-mentioned drawbacks of the prior art, to prevent the occurrence of vibration noise of the radiator core when the dynamic brake resistor is arranged inside the radiator, and to To provide a ventilation cooling device for a diesel electric locomotive which allows easy maintenance and inspection of the diesel locomotive.

[Summary of the invention]

In order to achieve this object, the present invention consists of a radiator comprising a plurality of radiator units, these plurality of radiator units are arranged in the longitudinal direction of the vehicle body, an air flow path is formed between adjacent radiator units, and a dynamometer is provided. The resistor for the microphone brake is composed of a plurality of resistor units, and each resistor unit is arranged to face the air flow path between the adjacent radiator units.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 6 to 9.

In this embodiment, the radiator 4 of the diesel engine is arranged on both sides of the vehicle body 1. Each radiator 4 is composed of a plurality of radiator units 4a (three in the illustrated example) arranged in the longitudinal direction of the vehicle body, and each radiator unit 4a is supported by a radiator support frame 15 fixed to the vehicle body 1. A ventilation gap G is provided between each radiator unit 4a to form an air flow path.

A resistor 7 for the dynamic brake of an electric locomotive is installed inside the radiator 4 with an appropriate gap H maintained.
is located. This resistor 7 is divided into a plurality of (two in the illustrated example) resistor units 7a, and each resistor unit 7a is distributed within the ventilation surface of the radiator 4 so as to fit within the ventilation surface. It is arranged as follows. For this reason, a gap J is provided between each resistor unit 7a. Each resistor unit 7a is supported by a resistor support member 16 fixed to the vehicle body 1 via an insulator 17, and each insulator 17 is provided with an insulator cover 18. The element 19 of the resistor unit 7a is arranged horizontally.

The ventilation fan 12 is arranged at the upper center of the vehicle body 1, and sucks cooling air through the radiator 4 and the dynamic brake resistor 7 on the side of the vehicle body.
The heated cooling air is then discharged from the top of the vehicle body. The fan 12 is driven by a diesel engine (not shown), a propeller shaft 20, and a gearbox 2.
1, through the vertical shaft 22. Of course, this may also be done by a drive motor.

Partition walls 23 are provided before and after the section where the radiator 4 and the resistor 7 are arranged, and one of the partition walls 23 is provided with a ventilation port 24 that takes in cooling air to lower the temperature of the gearbox 21. It is being

With the above configuration, since each unit 7a of the dynamic brake resistor 7 is distributed and arranged within the ventilation surface of the radiator 4, the wind speed within the ventilation surface of the radiator 4 becomes relatively uniform. , since there are no locally high wind speeds,
It is possible to prevent the generation of vibration noise from the radiator coffin. Further, in the above embodiment, a gap G is provided between the radiator units 4a, and each resistor unit 7a is arranged to face this gap G, so that the radiator units 4a passing through the gap G are As a result, the unheated cooling air directly hits the resistor unit 7a, improving the cooling efficiency of the resistor unit 7a. Furthermore, since the dynamic brake resistor 7 is divided into a plurality of units, each resistor unit 7a is small and lightweight, making it extremely easy to remove and install in a narrow space during maintenance and inspection.
Since the span length of the element 19 is shortened, sagging due to thermal expansion of the element is reduced, and short-circuit accidents of the element due to sagging are also eliminated.

In the above embodiment, a case has been described in which the dynamic brake resistor is divided into two parts on one side, but it can also be divided into three or more parts.

〔Effect of the invention〕

As explained above, according to the present invention, the radiator and the dynamic brake resistor are each composed of a plurality of units, and the resistor units are arranged opposite to the air flow path between the radiator units. The speed of the cooling air passing through the radiator is made uniform, and there are no areas where the wind speed is extremely high, making it possible to prevent vibration noise from occurring in the radiator cuff-in. Furthermore, since the dynamic brake resistor is divided into multiple parts, each unit is smaller and lighter, making it easier to remove and install during maintenance and inspection, and also has the advantage of preventing short-circuit accidents caused by sagging elements. be.

[Brief explanation of the drawing]

Figures 1 and 2 are a cutaway plan view and side view of a conventional diesel electric locomotive, respectively, and Figure 3 is a cross-sectional view of an example of a conventional diesel electric locomotive ventilation cooling system. , FIG. 4 and FIG. 5 are longitudinal and cross-sectional views respectively showing other examples of conventionally proposed ventilation cooling devices for diesel electric locomotives, and FIG. 6 is a ventilation cooling system according to an embodiment of the present invention. A plan view of the cooling device, Figure 7 is A in Figure 6.
8 is a view taken along line B--B in FIG. 6, and FIG. 9 is an enlarged sectional view of portion C in FIG. 8. 1...Vehicle body, 4...Radiator, 4a...Radiator unit, 7...Dynamic brake resistor, 7a...Resistor unit, 12...Fan, G, H, J...Gap.

Claims (1)

[Claims] 1 A vehicle includes a radiator placed on both sides of a vehicle body, a dynamic brake resistor placed inside the radiator, and a fan installed inside the vehicle body, and the fan is rotationally driven to connect the radiator and the dynamic brake. In a diesel electric locomotive that cools the locomotive by letting outside air pass through the brake resistor, the radiator is composed of a plurality of radiator units, and these plurality of radiator units are arranged in the longitudinal direction of the car body, and adjacent radiators An air flow path is formed between the units, and the dynamic brake resistor is composed of a plurality of resistor units, and each resistor unit is arranged to face the air flow path between the adjacent radiator units. A ventilation cooling system for a diesel electric locomotive, which is characterized by: